Steve Cherundolo has undergone arthroscopic knee surgery this week, and the timetable for his return is unclear.

Hannover confirmed the news on Thursday that the Illinois native had surgery on his left knee after missing the last three Bundesliga games.

"The [arthroscopic] knee surgery was made yesterday in Hannover," Hannover spokesman Alex Jacob told YA. "We hope to have Stevie back in the training sessions of the team in hopefully two or three weeks. He will definitely miss the matches in the UEFA Europa League against Anji Machatchkala from Russia."

Cherundolo, who will turn 34 this month, is currently the captain at Hannover, where he has spent his entire professional career since 1999. For the US national team, Cherundolo has been on the roster for the last three World Cups and has been capped 87 times.

The news is also a setback for the US team, which lost its opening game of the hexagonal World Cup qualifying round yesterday against Honduras, and Cherundolo's surgery makes him questionable for the important games next month against Costa Rica and Mexico.